2152305989 has 2 divisors, whose sum is σ = 2152305990. Its totient is φ = 2152305988.

The previous prime is 2152305979. The next prime is 2152306007. The reversal of 2152305989 is 9895032512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1867709089 + 284596900 = 43217^2 + 16870^2 .

It is a cyclic number.

It is not a de Polignac number, because 2152305989 - 2²⁸ = 1883870533 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2152305979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1076152994 + 1076152995.

It is an arithmetic number, because the mean of its divisors is an integer number (1076152995).

Almost surely, 2^2152305989 is an apocalyptic number.

It is an amenable number.

2152305989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2152305989 is an equidigital number, since it uses as much as digits as its factorization.

2152305989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 194400, while the sum is 44.

The square root of 2152305989 is about 46392.9519323787. The cubic root of 2152305989 is about 1291.1241505927.

The spelling of 2152305989 in words is "two billion, one hundred fifty-two million, three hundred five thousand, nine hundred eighty-nine".